Answer:
The answer is B. 5x^-6 because you have to subtract
Each friend got 3 and there were 2 pieces left over, to find the answer you would do the following:
20/6 (20 divided by six) which is 18 and the remainder is 2
Remainder=Extra
Answer:

Step-by-step explanation:
Curved surface area=
where R is radius and H is height
Since H=6R then curved surface area=
Therefore,
and making R the subject

Therefore, H=6R=6*3.000604=18.00362 m

Therefore, 
Answer:
-0.08
Step-by-step explanation:
Multiply.
-0.2
x 0.4
_____
0 0 8
Each number you started out with has 1 space between the last number and the decimal, so your final answer will have 2 spaces.
Also, since you multiplied a negative and a positive, your final answer will be negative.
The lines are parallel, because they have the same gradient but are just in different positions ie. y = x-9.